eliminating the need for external vent piping in indoor installations where gas escapement must be restricted

5 to 3 inches in size

the P271100 is the correct replacement flame sensor for maintaining the mechanical integrity of both top vent and direct vent furnace configurations

Always check the part number stamped on the side of the original pressure switch

Enhanced Safety Logic: Reliable flame sensing prevents hazardous gas accumulation by closing the safety pilot valve immediately upon flame loss

Lennox 83L83 Limit Switch eliminating the need for externalThe Lennox 83L83 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces. As a genuine Lennox OEM replacement part, this auto reset limit switch is engineered to open the electrical circuit to the gas valve if the plenum temperature exceeds the 180F safety threshold, preventing heat exchanger damage. Once the temperature drops to approximately 150F, the switch automatically closes to resume